Separable fastener



April 30, 1929. E s. CARR 1,711,4544

l EPARBLE FASTENER I I.

Filed Jan. 7, 1927 IPatented Apr. 3i), 1929.

Unirse" srArn-s rarer omen.

anni) s. Gann, or NEWTON, MASSACHUSETTS, Assrcfnon, BY ivrnsnn. ASSIGNMENTS, To Gann FasTnNnn connai-JY, n ooRronnTTon on MAssAcnUsnTTs.

SEPARABLE FASTENER.

Application led January 7, 1923*?. Serial No. 158,692.

My invention aims to provideimprovements in separable fasteners of the stud and socket type.

ln the drawings, which illustrate a preferred embodiment of my invention Figure 1 is a rear elevation of the complete socket member as it appears when secured to socket-carrying medium;

Fig. 2 is a vertical section'showing the complete stud and socket installation, kthc stud being shown in elevation and the section of the socket being taken on the line 2 2 of Fig. 1;

Fig. o is an elevation of the socket-casing showing the stud-engaging spring assembled therewith Y Fig. 4 is a section taken onV the line 4-4 of FiO. 1' and Fig. 5 is section taken on the line 5--5 of Fig. 1.

Referring to the `embodiment of my 1nvention illustrated by the drawings, I have shown, for the purpose of illustration, a three-side lock fastener which includes the usual type of stud 1, here shown as secured toa rigid support. 2, and a novel form of socket A l The socket installation includes the casing 3, containing the spring 1, which is secured to a flexible carrying medium 5by means of the arongs 6 clinched against a back plate 7. mhe casing 8 is formed from a single piece of metal and is located at the front face of the carrying medium 5, While the back plate 7 is located at the opposite face of the carrying medium as shown in Fig. 2. Both the casing and the back plate are aligned with' an aperture 8 through the carrying medium so that the stud may pass through the aperture 9 in the back plate and through the aperture 8, to engage the spring 4 in the casing.

At the back face of the casing 3, which lies against the carrying medium 5 (Fig. 2), l have provided, adjacent ,its periphery, a substantially continuous support-engaging portion B which is formed by bending inwardly, from the periphery of the casing, a plurality of portions C of various lengths and formations, as best shown in Fig. 3. The short portions 9a are curved inwardly and downwardly (Fig. 4) yand provide means for positioning the spring 4 in the casing. Other portions 10 extend inwardly vfrom the edge of the casing,zin a direction provide the prongs 6. The'remainder of the casing 3 is in the usual form, being provided with an aperture through which the head 13 of the'stud lvmay proj ect and which 1s intersected by the jaw portions 14 of they spring 4, as shown lin Figs. -2 and 3.

The back `plate 7 is of the usual form, hav,- ing the elongated aperture 9, which. is surrounded by the walll 15 closely fitting the .shank 16 of the stud at three sides, to provide the means for preventing separation of the socket from the stud by stresses exerted thereon, except a pulladjacent to the lower edge.

1V hen assembling the socket casing 3, to Y the carrying medium 5, the prongs 6 are forced through the carrying medium and adjacent the Vprongs or on the edge of the casing, as has been true of other known types of casings. The substantiallyV contina smooth surface for the carrying medium to pull against and also provides an area between the prongs and the edge of the casing, against which the carrying medium may be firmly pressed. 'f

The importance of spacing the prongs 6 from the edge of the casing, and the provision of the annular portion B is particularly brought out when used in connection with three-side lock fasteners, as compared with ordinary snap fasteners, which may be separated from any side. In a three-side lock fastener installation, the stresses exerted upon the carrying medium at three sides of the fastener whereit can not be separated would, `in manyinstances, be sutlicient to uous support-engaging portion B presents` separate the ordinary snap fastener and prevent, to4 seine extent, tearing or cutting the carrying inediuin. lVhen the stress inust be borne by the carrying inediuin, as in threeside lock fasteners, the result has been. a tearing or cutting of the carrying inediuni which produced an unsightly appearance and in inost cases weakened the attaclnnent of the socket to its carrying niediuin. To prevent this, a practice has been formed' ot yn'oviding the casing with an extraV plate, which would project beyond the car'iing.

Applieants casing, as described and illustrated, eliininates the use oll the entra plate and provides the advantages et' having an annular portion outside the prongs for the purposes described and at the saine tiine 1' rovides for a neat, durable, less enpcn` fastener installation. y

My invention is not limited to the particu-A lar embodiment illustrated and described.

l claim:

lil-i fastener socket comprising a casing provided with a substantially continuous support-engaging back face portion substaitial width foi-ined by a series of closely abutting vinwardly bent portions extending inwardly troni the peripheryT of .the casing, a pluralityo'l attaching prongs extending at right angles to the casing and located adjacent to the inner edge oit said support engaging portion and a springheld in assembled relation with said casing by soine ot said inwardly bent portions.

2. A fastener socket comprising a casing having a substantially' continuous supportengaging back lace portion i'ornied by a series ot closely abutting portions bent inwardly troni the periphery of the casing and a stad-engaging spring positioned in said casing against the inner ends of some ot said inwardly bent portions and held in said casing` by soine of the other of said portions.

3. A fastener socket comprising a casing having a substantially continuous sopportengaging back face portion iornied by a series of closely abutting portions bent inwardly troni the periphery ot the casing and a. stud-engaging spring positioned in said casing against the -tree ends of sonie et said inwardly bent portions, other portions being extended to provide attaching ineans for securing the casing to its carrying niediurn and still other portions extending over said spring to hold it in assembled relation` vbent portions ol' thi` casingI and the' attaehi in assembly with the casing A by the portions 9 and l0.

5. A tasten/er socket installation comprising, in combination, a stud-receiving socket inem-ber having ineens :for engagement with a cooperating stud, a carrying medium and an attacl ing plate, said stud-ieceiving socliet inen'iber being provided with a plurality'oiA relatively closely abutting inwardlyr bent portions extending troni the periphery oi the casing to provide a relatively wide substantially contiinions vcarrying inediuin engaging surface and attaching prongs located at the inner edge of Vsaid earrying inediuin engaging surface, said attaching prongs securing v[he attaching plate and studfreceiving socket member against opposite sides of the carrying medium to grip a portion thereof tightly between ythe carrying niedinin engaging surface of the socket ineniber and the attaching plate.

6. A fastener socket installation compris` ing, in combination, a casing element, a carrying inediuni and an attaching plate, said casing elenient being provided with a plurality or" relatively closely abutting in wardly bent portions" extending roin the periphery ot' Vthe casing to provide a snbstantially continuous carrying medium-ein gaging surface, means for securing the attaching plate and casing against opposite sides of' the carryine medium to grip a portion'thereot tightly between the inwardly plate and a spring positioned in said ci ing against the ends ot seine oit' said in tardly bent portions so that the spring is free troni the gripping actionl exerted between the inwardly bent portions and the attaching plate.

In testimony whereof, l have signed iny naine to this specification.

` FRED S. CARR.

CERTIFICATE OF CORRECTION.

Patent No. 1,711,454. Granted April 30, 1929, to

FRED S. CARR.

It is hereby certified that error `appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 64, claim 4, strike out the words "closely abutting" and insert the same before the word "portions" in line 65; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 18th day of June, A. D. 1929.

M. J. Moore,

v(Seal) Acting Commissioner of Patents. 

